CoursePress Pro / MarketPress enrolment

Hi
Site: http://arooneytesting.co.uk/cp/wp-admin

When creating a course in Step 6 - Enrollment & Course Cost, the choices I have are:
Manually added only
Registered User
Registered User With A Pass Code
Registered User Who Completed the Prerequisite Course

This means that the student already has to be registered. Is there a way that a student can buy a course and then register during the sign up proceedure.